Speaker
Prof.
Albrecht Karle
(University of Wisconsin-Madison)
Description
Neutrino astronomy at energies beyond the highest energy IceCube events requires very large detection volumes. The Askaryan Radio Array (ARA) is designed to utilize the coherent emission of radio waves from neutrino-induced cascades of energies beyond ~30 PeV in the South Pole ice.
Three ARA detector stations have been deployed in 2011/12 and 2012/13 polar seasons. The stations are in operation and data are transmitted on a daily basis via satellite.
I will describe the detector, calibration strategies and data reduction to distinguish the rare radio signals from backgrounds.
Using data from only two stations over a short exposure time of 10 months, a neutrino flux limit of 3⋅10^{−6} GeV/(cm2 s sr) is obtained at an energy of 10^{18} eV, which offers promise for the full ARA detector. Future plans will be discussed briefly.
Author
Prof.
Albrecht Karle
(University of Wisconsin-Madison)
